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How do severe storms form?

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Tuesday’s forecasted storms have many asking how do severe storms even form at night?

Chief Meteorologist Brian Wilkes says the jet stream is responsible.  A jet stream is a fast, narrow air current in the atmosphere. Earth’s main jet streams flow from west to east.

A 100 mph jet stream is expected to move in, fueling storms late Tuesday night into Wednesday morning.

The main threat will be damaging winds of up to 70 mph. A tornado threat is likely from Southeastern Illinois to Mississippi.

The storm is expected to sweep through Central Indiana 12-4 a.m. Wednesday.